Showing papers in "Archives of Oral Biology in 1972"

TL;DR: The overall character of these plaque isolates suggested that a gingival crevice microflora containing several amino-acid fermenting species had colonized the tooth surfaces, which might explain why these subjects had a low caries experience.

TL;DR: Gnotobiotic rats monoinfected with isolates identified as A. viscosus and A. naeslundii developed severe periodontal infections and root surface caries.

TL;DR: It was concluded that receptors in or around the tooth are responsible for the inhibition of jaw muscle activity produced by tapping the tooth.

TL;DR: There was evidence from some cases of necrotizing ulcerative gingivitis and noma that the status of oral hygiene was not enough to explain the presence of these lesions in only the poor underprivileged communities, and the importance of adequate supply of dietary nutrients for the maintenance of structural and functional integrity of oral tissues was highlighted.

TL;DR: High concentrations of IgG, IgA, IgM and C′3 were found in crevicular fluid, although the levels were well below those in serum, which may be interpreted by complement-dependent immune reactions in the gingival crevice favouring the IgG class of antibody.

TL;DR: The most striking finding was the high frequency of non-functional side contact, which was found bilaterally in 8 per cent and unilaterally in 34 per cent of the children.

TL;DR: Thresholds of single pulpal, periodontal, gingival and labial nerve fibres have been measured in cats using both monopolar and bipolar stimulation of teeth and it is suggested that this technique might provide the basis of a more reliable clinical method for determining the vitality of teeth.

TL;DR: The fluoride acquisition of teeth erupting during the study was substantially greater than that of teeth initially erupted and the APF solution was superior to the neutral NaF in depositing fluoride in intact enamel.

TL;DR: Duct ligation of the sublingual gland, avoiding the nerves, in 23 cats from 1 day to 1 yr produced mucous extravasation in 13 glands, with mucocele formation in 6 of these, and marked atrophy in only 8 glands, suggesting that complete ductal obstruction should not be disregarded as a possible aetiological factor in mucoceles formation.

TL;DR: It is shown, by means of a transducer, that a transient opening movement takes place in relation to the silent period of electrical stimuli applied to oral mucous membrane while a steady biting force is maintained.

TL;DR: Analysis of the resemblance between relatives from two Melanesian populations indicated that, for each of five morphological characters scored on an earlier and a later developing member of a tooth class, the later developing tooth showed a smaller component of additive genetic variation.

TL;DR: Control data on normal craniofacial growth were obtained largely from previous studies on large samples of monkeys, and the results were analysed by serial cephalometric roentgenography combined with metallic implants.

TL;DR: The localization of alkaline phosphatase in the enamel organs of 1-day-old rats was investigated using the lead-citrate method and some cytoplasmic bodies seen in the cells of the stratum intermedium occasionally showed enzyme activity.

TL;DR: A simple, rapid method is presented by which a relatively pure fraction of dentinogenically active odontoblasts from the rat incisor can be obtained, as well as a morphologically intact dental pulp with the odontoblast layer still adhering to it.

TL;DR: It is suggested that dentinal tubules are not completely occupied by odontoblast processes but that a normal recession of the processes occur with or without a deposition of occluding substances.

TL;DR: A positive, statistically significant correlation was found between the concentrations of cathepsin D in gingival exudate and the depths of the periodontal pockets, as well as the mean percentage of bone loss, which substantiate a possible role of lysosomal enzymes in the pathogenesis of periodontitis.

TL;DR: The resting lengths of fibres of adult rat temporalis, masseter and pterygoid muscles were measured directly after maceration and teasing and showed male muscles were slightly larger and stronger than female.

TL;DR: It was concluded that environmental factors present during or following enamel maturation influence enamel composition and solubility.

TL;DR: The nutritional requirements of Streptococcus sanguis AT CC strains 10556, 10557 and 10558, Strep.

TL;DR: After prolonged duct ligation, duct and acinar cells of both glands showed extreme atrophy histologically; however, individual cells still contained cellular organelles and low activity of oxidative enzymes for essential vital functions.

TL;DR: It was concluded that the physical presence of a reaction product is a very likely contributing factor in the treatment of labial enamel of both human and bovine incisor teeth with fluoride salts.

TL;DR: It is suggested that the silent period due to electrical stimulation may be part of the jaw-opening reflex observed by other workers in animal experiments and further experiments are suggested to examine this possibility.

TL;DR: A detailed description of chromatolytic cell group locations was derived from experimental lesions in young adult Wistar rats, finding that inferior alveolar nerve cell bodies were closely arranged in a posterolateral protuberance at the side of the ganglion.

TL;DR: Addition of equivalent amounts of the individual organic acids to replicate samples of plaque produced consistently different pH decreases within the physiological range, lactate producing a significantly lower pH than the volatile acids.

TL;DR: An absorption peak which appears at 1540 cm −1 when enamel is combined with polyacrylic acid is shown to arise from the ionization of the carboxyl groups of polyac acrylic acid through interaction with the calcium ions in enamel.

TL;DR: Lingual pressure patterns were studied longitudinally in 10 children whose swallow type changed from “tongue thrust” to “adult” while repeated pressure recordings were being made to support the concept of a gradual transition toward adult swallowing.

TL;DR: The results demonstrate that the measuring technique made possible by means of a measuring technique which makes possible successive registrations from the same tooth is fairly reliable, and corroborate clinical and histologic observations in the same teeth.

TL;DR: The alkaline phosphatase from this source shows many properties in common with the bone isoenzyme, and the localization and possible functions of the enzyme in the mineralization process are discussed.

TL;DR: The mucins present in mixed seromucous/mucous and pure mucous minor salivary glands are comparable to those encountered in major sublingual and submandibular glands.